I would summarize by saying that Judaism is completed in Christianity, not "gone away." Judaism was meant for the world, not just for Israel. Those who are Abraham's faith are true sons and daughters of Abraham, and that faith has always looked to the Messiah, the Christ.

It is not Judaism that has "gone away," but Judaism practiced as though it is not fulfilled in Christ is to be abandoned.

Here's another way of saying it: A pastor was facing surgery and requested a hospital chaplain. A Reformed Jew met with him and the pastor asked the Rabbi to pray for him.

"After all," he said, "We serve the same God."

I respectfully disagree. Jews and Christians do not worship the same God! To elaborate:

We Christians worship the Man Jesus of Nazareth as God. The Jews do not. We believe the Scriptures of both Testaments describe a Triune God, One in essence, Three in Person. The Jews do not.

While we share some common scriptures, we certainly do not worship the same God in any sense. One might actually say that believers in Christ are "better Jews than the Jews are," since we receive and worship and follow the Messiah and enjoy the indwelling presence of God.

I hope that helps...